irons



(No Model.)

' 3 sheets-sheet 1..

IRONS;

CORNICE BRAKE AND FOLDER.

3 lSheets--Sheet 2'.

(No Model.)

D. IRON S. CORNICI: BRAKE AND FOLDER.

Patente Sept.- 21,1897.

we uonms Perils co. moraLmm, wnsnmcrom b. n

`3 sheets-sheet 3.

(No Model.)

D. IRONS. CORNICE BRAKE AND EoLDEE.

No. 590,264. Patented Sept. 21,1897.

UNITED STATES ,PATENT OEEICE.

DAVID IRONS, OF S'I. LOUIS, MISSOURI, ASSIGNOR OF ONE-HALF TO IDVARDIV'. DIETERLE, OF SAME PLACE.

CORNICE-BRAKE AND FOLDER.

SPECIFICATION forming part of Letters Patent No. 590,264, datedSeptember 21, 1897. Application led March 8, 1897. Serial No 626,437.(No model.)

To (all 1U/"win it 7720.1/ (Jo/calva Beit known that I, DAVID IRONs, acitizen of the United States, residing at the city of St. Louis, Stateof Missouri, have invented a certain new and useful Improvement inCornice- Brakes and Folders,of which the following is a full, clear, andexact description, reference being had to the accompanying drawings,forming a part of this specification,in which- Figure l is a frontelevational view of my improved machine. Fig. 2 is a top plan View ofthe same. Fig'. 3 is an end elevational view ofthe same. Fig.4 is an endelevational view7 the bearing for the folding-frame being removed. Fig.5 is a cross-sectional view showing a piece of metal in position to befolded. Fig. 6 is a similar View showing the position of the parts inthe act of folding the metal. Fig. 7 is a sectional view showing theinvention used as a cornice-brake. Fig. S is a similar view showing themethod of forming a compound oran ogee curve in a cornice. Fig. 9 is asectional view through the frame, showing the manner of supporting thebrakingforms for cornice-molds. Fig. 10 is a side elevational view ofthe form-support. Fig. 11 is an end elevational view of the same. Fig.12 represents a face view and sectional view of a ring with which theform-support coperates. Fig. 13 is al detail view of a portion of thefolding-frame.- Fig. 1i is a section al view through the foiding-framehandle, showing the manner in which the handle may be locked. Fig. 15 isan inner face view of the handle, showing the lock. Fig. 1G is a detailview of a portion of the stop-plate for the metal, which is used whenthe metal is to be folded. Fig. 17 is a detail view of a portion of thecla-mp mounted on the folding-frame; the bottom of said clamp showingthe grooves for cooperating with the ribs of the stop-plate. Fig. 18 isa detail view of the bearing for the folding-frame.

This invention relates to a new and useful machine to be used in bendingmetal to forni flanges at the edges thereof, such as the flanges onroofing-plates and the like,and also a machine to be used for formingmolding in metal for cornice-work and the like.

The object of this present invention/is to construct a machine of thecharacter described which will be simple,cheap,and easily and readilyadapted to perform the work for which it is intended.

The invention consists in the novel construction and arrangement of thefoldingframe; the combination of the frame and clamp; the novel lock forthe clamp; the combination of the folding-frame, clamp, and

stop-plate; the novel support for the brakeform, and, finally, theconstruction, arrangement, and combination of the several parts, all aswill hereinafter be described, and afterward pointed out in the claims.

In the drawings, A indicates a suitable base-plate, which is adaptedeither to be secured to a table, as B, or mounted upon suitable legs.(Not shown.)

C indicates a table extension pivoted to the under side of base A andheld in position by a thumb-nut c, which permits the table extension tobe raised to an operative position, as shown in Figs. 5 and 6, or belowered, as shown in Figs. 7 and 8.

D indicates slotted cylinders bolted to the ends of frame A andcontaining bearingblocks which blocks support spindles e of afolding-frame E. This folding-frame is substantially the shape of afigure "1', its upper inner edge cooperating with the edge of the frameA, which edges are in line with the axis of the spindles e. The ends ofthis folding-frame are provided with suitable boxes E', in which boXesare mounted spindlesfof a clamp F, the forward edge of which clamp ispreferably faced with a hardmetal `strip F, which cooperates with themetal to hold the same against the folding-frame when the folding-frameis revolved to bend the metal, as shown in Fig. 6.

G indicates handles mounted on the outer ends of the spindles f, sothat'when the metal to be bent is placed under the clamp and the handlesGr moved forward-the clamp grasps the metal, holding it tightly againstthe folding-frame, and a continued movement of the handle in a forwarddirectioncauses the folding-frame to be tilted over, which thereby formsthe iiange along the edge of the sheet so clamped. In the event that it1s d'e- IOO vss

sired to form a flange on a sheet at right angies to a iianged edge theupper edge of frame` vhandles by which they may be turned.

J indicates threaded stems connected to the sprocket-wheels, which arereceived in the downwardly-extending flange at the rear edge of thefolding-frame. When the sprocketwheels are rotated, the stop-plate isadjusted inwardly and outwardly relative to the folding-frame, boththreaded stems being rotated in unison by reason of their connection.This stop-plate has ribs t' arranged on its upper and lower faces, whichribs it in suita-ble grooves formed in the folding-frame and clamp, sothat when a sheet is introduced to be folded it will be arrested at allpoints in its length and not be permitted to pass beyond the stop-plate.By` adjusting the stopplate flanges of different heights can be formed.

In folding heavy metal I prefer to'arrangc a Weight NV on an arm IV atthe ends of the spindles of the folding-frame, so that when the handlesG are pulled forward and the weights moved past dead-center said weightswill assist in the final operation of folding. Also when the fold ismade and the sheet raised to follow the folder the weight will assist inthe final operation of elevating the sheet. The blocks d in thecylinders D are divided, as shown in Fig. 1S, so that should thebearings become worn the blocks may be removed and the faces planed tomake a tight joint, a screw being introduced from aboveto hold theblocks together.

From the above the operation of forming iianges on sheets of metalisobvious. When it is'desired to brake a cornice, as it is termed-that is,form moldings in a sheet to be used in corniee-work--the stop-plate atthe rear end of the folding-frame is removed and the table C lowered, asshown in -Figs 7 and 8. The first operation is to form a flange on thesheet, which can be done in the usual way, as shown in Fig. 7. A form Kis now placed in positionon the frame A and the sheet bent over, asshown in Fig. 7. The supports for this form, so far as I am aware, arenovel, one of them being shown in detail in Figs. 9, l0, and ll. Anopening is made through the frame A, the rear end of which is somewhatcontracted. The shank of the support L is introduced into this openinguntil the upward projection Z rests against the form. Ring M, having aninterior beveled edge, is secured around this opening, and aspring-pressed notched member L', pivoted in a groove in the shank. ofthe 'support L, eooperates with this ring to hold the support tightlyagainst the form and prevents movement.

In using the machine as a brake it is also necessary to hold the clamptightly against' the sheet of metal being operated upon, and in order toaccomplish this in a simple and inexpensive manner I prefer to formteeth in the outer faces 0f the boxes which support the spindles of theclamp. A spring-pressed bolt O passes through the handle G, its innerend coperatin g with the teeth on the box, so that when the handle ispressed forward the bolt will engage the teeth and prevent an upwardmovement of the clamp. As it is not always desirable to use the clamp inthis l manner, this bolt is so constructed that its S. The form is nowplaced in position and the other portion of the curve made in the sheet.

The sheet is now reversed, l

From the above it will be seen that lthe* i machine isl capable offorming flanges and doing other workrequired in the manufacture ofrooting-plates and other articles made from sheet metal, the machinerequiring very .y

little change to adapt it for the diiferent Work it has to perform.

I am aware that many minor changes in the construction, arrangement, andcombination of the several parts of my device can Y be made andsubstituted for those hereinA shown and described without in the leastdeparting from the nature and principle of the invention.

Having thus described my invention, what I claim, and desire to secureby Letters Patent of the United States, is-

l. The combination with a suitable stationary frame, of a folding-frame,and a clam-p pivotally mounted on the folding-frame, the pivot-al axisof said folding-frame-being coincident with the upper meeting edges ofthe folding-frame and the stationary supportingframe; substantially asdescribed.

2. The combination with a stationary frame, of a folding frame,pivotally mounted in suitable supports and cooperating with thestationary frame, a clamp pivotally mounted on the folding-frame, saidclamp coperating with the folding-frame and the stationary frame, and ahandle for operating said llO clamp and folding-frame; substantially asdel scribed.

3. The combination with the frame, of a swinging folding-frame, a clamppivotally mounted on said folding-framc, and a stopplate operatingbetween thc clamp and folding-frame; substantially as described.

4. The combination with the frame, of a swinging folding-frame, a clamppivotally mounted onA said folding-frame, a stop-plate operating betweenthe clamp and foldingframe, and means for adjusting said stopplaterelative to the axis of rotation of the folding-frame; substantially asdescribed.

5. The combination with a suitable frame, of a swinging folding-frame, aclamp pivotally mounted on said folding-frame, said folding-frame andclamp being formed with alining grooves in their contiguous faces, and astop-plate operating between said clamp and folding-frame, saidstop-plate being provided with ribs which cooperate with the grooves inthe clamp and folding-frame; substantially as described.

G. The combination with a suitable frame, of a swinging folding-frame,aclamp pivotally mounted on said folding-frame, a stopplate operatingbetween the clamp and folding-frame, sprocket-wheels mounted in saidstop-plate and connected by a suitable belt or chain, whereby they maybe rotated in unison, and threaded stems secured to saidsprocket-wheels, and operating in threaded openings in thefolding-frame; substantially as described.

7. The combination with a suitable stationary frame, of a swingingfolding-frame cooperating with the stationary frame, a clamp pivotallymounted on said folding-frame, said clamp cooperating with the foldingand stationary frames, and means for locking said clamp in positionagainst the metal to be operated upon; substantially as described.

8. The combination with a suitable frame, of a swinging folding-frame, aclamp pivotally mounted on said folding-frame, a handle for operatingsaid clamp, and a lock in said handle for locking the clampin position;substantially as described.

9. The combination with a suitable frame, of a swinging folding-frame, aclamp pivotally mounted on said folding-frame, a handle for operatingsaid clamp and folding-frame, and a spring-pressed bolt mounted in saidhandle and cooperating with the foldingframe, for locking the clamprelative to the folding-frame; substantially as described.

1i). The combination with a suitable frame,

spindles of the folding-frame, the weights of which arms are adapted topass beyond deadcenter when the folding-frame is operated; substantiallyas described.4

12. The combination with a suitable frame, of a swinging folding-frame,a clamp pivotally mounted on saidfolding-frame, a form mounted on theframe, and form-supports cooperating with said frame for holding theform in position; substantially as described.

13. The combination with the frame, of a form, and form-supportcomprising a grooved shank and a pivoted notched bar in said shank whichcooperates with the frame of the machine to hold the form in place;substantially as described.

14. The combination with the frame, of a form, a form-support comprisinga grooved shank and a spring-pressed notched lockingbar pivoted in thegroove of said shank, a ring fitted in the frame around an opening forreceivin g the shank, said ring having a beveled edge to cooperate withthe notched bar of the form-support; substantially as described.

15. The combination with a suitable frame, of a swinging folding-frame,having spindles at its ends, slotted cylinders through which saidspindles pass, bearing-blocks in said cylinders, screws for holding saidbearing-blocks inposition, the pivotal axis of said foldingframe beingcoincident with the upper meeting edges of the folding-frame andr thesupporting-frame; substantially as described.

In testimony whereof I hereunto aflix my signature, in presence of twowitnesses, this 23d day of February, 1897.

DAVID IRONS.

lVitnesses:

HUGH K. WAGNER, F. R. CORNWALL.

IOO

